A noisy speech parameter enhancement method and apparatus
CA 2243631 A1 · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Sorqvist, Patrik; Handel, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Noisy speech parameters are enhanced by determining (22 26) a background , noise PSD estimate, determining (18) noisy speech parameters determining (20) , a noisy speech PSD estimate from the speech parameter subtracting (30) a , background noise PSD estimate from the noisy speech PSD estimate and , estimating (32) enhanced speech parameters from the enhanced speech PSD estimate.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2019.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.